Chemical laboratory

Ethylene Glycol Inhibited

High-Performance Antifreeze and Heat Transfer Fluid

  • CAS 107-21-1
  • Formula C₂H₆O₂
  • Flash Pt 111 °C
  • Density 1.1132 g/cm³

Physical & Chemical Properties

Property Value Unit
Boiling point 197.3 °C °C
Flash point 111 °C °C
Density 1.1132 g/cm³ g/cm³
Solubility Miscible with water -
Ph 6.0-7.5 (50% solution) -
Molecular weight 62.07 g/mol g/mol
Melting point -13 °C °C
Vapor pressure 0.06 mmHg at 20°C mmHg
Autoignition temp 410 °C -
Appearance Clear, colorless liquid -
Odor Odorless -
Vapor density 2.14 (air = 1) g/cm³

Overview

Ethylene Glycol Inhibited (CAS 107-21-1) is a clear, colorless liquid with the molecular formula C₂H₆O₂ that serves as a versatile industrial chemical for antifreeze, coolant, and heat transfer applications. With a molecular weight of 62.07 g/mol and complete miscibility with water, this inhibited formulation provides enhanced corrosion protection compared to standard ethylene glycol. The inhibitors prevent metal corrosion in cooling systems, making it ideal for automotive, HVAC, and industrial applications where reliable thermal management is critical.

Key Applications

Ethylene glycol inhibited finds widespread use across multiple industries due to its excellent thermal properties and freeze protection capabilities. In automotive applications, it serves as the primary component in antifreeze formulations, protecting engine cooling systems from freezing at temperatures as low as -13°C while providing boiling point elevation to 197.3°C. The aviation and transportation industries rely on this chemical for deicing fluids, ensuring safe operation in cold weather conditions.

Industrial heat transfer systems utilize ethylene glycol inhibited for its superior thermal conductivity and temperature stability. Manufacturing facilities producing polyester fibers and resins depend on this chemical as a key intermediate in polymerization processes. Additionally, its excellent solvent properties make it valuable in various chemical synthesis applications where water-miscible solvents are required.

Safety & Handling

With a flash point of 111°C and autoignition temperature of 410°C, ethylene glycol inhibited requires standard industrial safety precautions during handling and storage. Personnel should wear appropriate personal protective equipment including chemical-resistant gloves, safety glasses, and protective clothing to prevent skin and eye contact. Ensure adequate ventilation in work areas, as the vapor pressure of 0.06 mmHg at 20°C can lead to vapor accumulation in enclosed spaces.

The vapor density of 2.14 means vapors are heavier than air and may accumulate in low-lying areas. Always follow proper lockout/tagout procedures when servicing equipment containing this chemical, and maintain emergency eyewash and shower facilities in work areas.

Storage & Shelf Life

Store ethylene glycol inhibited in tightly sealed containers made of compatible materials such as stainless steel, carbon steel, or high-density polyethylene. Maintain storage temperatures between 5°C and 40°C to preserve product integrity and inhibitor effectiveness. Keep containers away from heat sources, open flames, and incompatible materials including strong oxidizing agents and reactive metals.

Properly stored product maintains its effectiveness for up to two years from the date of manufacture. Regularly inspect storage containers for signs of corrosion or damage, and ensure secondary containment systems are in place to prevent environmental release. Maintain detailed inventory records and implement first-in, first-out rotation procedures.

Why Alliance Chemical

Alliance Chemical delivers Ethylene Glycol Inhibited with same-day shipping from our Taylor, Texas facility, ensuring rapid delivery across the region. We offer flexible shipping options including UPS for smaller quantities, LTL for medium orders, and FTL for bulk requirements. Every shipment includes comprehensive Safety Data Sheets (SDS) and Certificates of Analysis (COA) to support your quality assurance and regulatory compliance requirements, backed by our commitment to exceptional customer service and technical support.

Shipping & Availability

Parcel Shipping

UPS Ground supports pints, quarts, and most 1-gallon packages nationwide.

LTL Freight

5-gallon pails, drums, and totes move via LTL carriers such as ABF Freight, SEFL, Saia, and XPO.

Full Truckload

FTL available for palletized bulk orders. Competitive freight rates.

Local Pickup

Same-day pickup at our Taylor, TX warehouse for Texas customers.

SDS, COA, and TDS available for every product • Same-day shipping on orders by Mon-Thu 1 PM CT / Fri 12 PM CT

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Frequently Asked Questions

What is Ethylene Glycol Inhibited and what is it used for?
Ethylene Glycol Inhibited is neat ethylene glycol formulated with corrosion inhibitors to protect metal components in closed systems. It is used as a heat‑transfer fluid, antifreeze concentrate, solvent and laboratory reagent in industrial and laboratory applications.
How should Ethylene Glycol Inhibited be stored and what is its shelf life?
Store in tightly closed original containers in a cool, dry, well‑ventilated area away from heat and oxidizers. Typical shelf life is 12–36 months depending on inhibitor formulation and storage conditions; consult the supplier COA for exact expiry information.
What are the safety and handling recommendations for Ethylene Glycol Inhibited?
Use chemical‑resistant gloves, eye protection and protective clothing, and ensure adequate ventilation to minimize inhalation and skin contact. Refer to the product SDS for hazard classification, exposure limits, first aid measures and spill response procedures.
What does 'inhibited' mean and how does 100% concentration differ from diluted solutions?
'Inhibited' means corrosion inhibitors have been added to the ethylene glycol to reduce metal corrosion. 100% denotes the undiluted (neat) product; dilution with water changes freezing/boiling points and heat‑transfer properties and should be formulated to suit the intended application.
What documentation is available with Ethylene Glycol Inhibited?
Suppliers typically provide a Safety Data Sheet (SDS), Certificate of Analysis (COA) and Technical Data Sheet (TDS); additional regulatory declarations (e.g., REACH) may be available on request. Always request lot‑specific COA for critical specifications.
How is Ethylene Glycol Inhibited shipped and what packaging options are common?
Common packaging options include 20–60 L drums, 275–1000 L IBC totes and bulk tanker shipments depending on order size. Transport classification and shipping requirements vary by jurisdiction and carrier—consult the SDS and your carrier for specific instructions.
What materials is Ethylene Glycol Inhibited compatible with?
Inhibited ethylene glycol is generally compatible with steel, cast iron, many common alloys and a range of plastics, and can protect metals when the correct inhibitor package is used. It may be incompatible with some elastomers, paints and seal materials, so perform compatibility testing or consult material charts for specific components.
What technical specifications should I expect for Ethylene Glycol Inhibited?
Typical specifications include assay/purity (commonly ≥99% for industrial grades), water content, specific gravity, refractive index, acidity/pH and color/appearance. Exact limits and test methods vary by supplier—request the product TDS or COA for guaranteed values.
Which industries and applications commonly use Ethylene Glycol Inhibited?
Industries include HVAC and power generation, industrial refrigeration, metalworking, chemical processing and research laboratories for uses such as heat transfer, antifreeze concentrates, solvents and laboratory reagents. It is selected where corrosion protection in closed systems is required.
How can I purchase Ethylene Glycol Inhibited and what is its availability?
Ethylene Glycol Inhibited is sold by chemical manufacturers and distributors in standard packs or bulk; minimum order quantities, lead times and freight options vary by supplier. Contact vendors for quotes, SDS, COA, sample availability and shipping options.

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